SYSCTL linux command manual

SYSCTL(8)                                                      SYSCTL(8)



NAME
       sysctl - configure kernel parameters at runtime

SYNOPSIS
       sysctl [-n] [-e] variable ...
       sysctl [-n] [-e] -w variable=value ...
       sysctl [-n] [-e] -p 
       sysctl [-n] [-e] -a
       sysctl [-n] [-e] -A

DESCRIPTION
       sysctl is used to modify kernel parameters at runtime.  The parameters
       available are those listed under /proc/sys/.  Procfs is  required  for
       sysctl(8)  support  in  Linux.  You can use sysctl(8) to both read and
       write sysctl data.

PARAMETERS
       variable
              The name of a key to read from.  An example  is  kernel.ostype.
              The '/' separator is also accepted in place of a '.'.

       variable=value
              To  set  a  key, use the form variable=value, where variable is
              the key and value is the value to set it to.  If the value con-
              tains  quotes  or characters which are parsed by the shell, you
              may need to enclose the value in double quotes.  This  requires
              the -w parameter to use.

       -n     Use this option to disable printing of the key name when print-
              ing values.

       -e     Use this option to ignore errors about unknown keys.

       -w     Use this option when you want to change a sysctl setting.

       -p     Load  in  sysctl  settings   from   the   file   specified   or
              /etc/sysctl.conf if none given.

       -a     Display all values currently available.

       -A     Display all values currently available in table form.

EXAMPLES
       /sbin/sysctl -a

       /sbin/sysctl -n kernel.hostname

       /sbin/sysctl -w kernel.domainname="example.com"

       /sbin/sysctl -p /etc/sysctl.conf

FILES
       /proc/sys /etc/sysctl.conf

SEE ALSO
       sysctl.conf(5)

BUGS
       The -A parameter behaves just as -a does.

AUTHOR
       George Staikos, 




                                 21 Sep 1999                        SYSCTL(8)